install-watchman-ubuntu.sh

sudo apt install -y autoconf automake build-essential python-dev libtool libssl-dev pkg-config

cd /tmp
git clone https://github.com/facebook/watchman.git -b v4.9.0 --depth 1
cd watchman/
./autogen.sh 
./configure --enable-lenient
make
sudo make install

thanks Markis for putting this together! It is better than the installation instructions on Watchmen page

N.B. these same instructions don't work on v4.9.0. It craps out here on Ubuntu 16.04:

❯ make                                                                            
make  all-am
make[1]: Entering directory '/home/me/Projects/watchman'
cd python && /usr/bin/python ./setup.py clean build_py -c -d . build_ext -i
  CXXLD    watchman
running clean
removing 'build/temp.linux-x86_64-2.7' (and everything under it)
running build_py
running build_ext
copying build/lib.linux-x86_64-2.7/pywatchman/bser.so -> pywatchman
watchman-ContentHash.o: In function `watchman::ContentHashCache::computeHashImmediate(watchman::ContentHashCacheKey const&) const':
/home/me/Projects/watchman/ContentHash.cpp:65: undefined reference to `SHA1_Init'
/home/me/Projects/watchman/ContentHash.cpp:78: undefined reference to `SHA1_Update'
/home/me/Projects/watchman/ContentHash.cpp:81: undefined reference to `SHA1_Final'
collect2: error: ld returned 1 exit status
Makefile:1566: recipe for target 'watchman' failed
make[1]: *** [watchman] Error 1
make[1]: Leaving directory '/home/me/Projects/watchman'
Makefile:1101: recipe for target 'all' failed
make: *** [all] Error 2

Switching to v4.7.0, doing a make clean and then trying again didn't work either. Had to nuke entire watchman dir and then the instructions above worked. Thanks Markis!

What helped you @mnpenner

Everything works until 8th step. When I start running make this is what I get.

make  all-am
make[1]: Entering directory '/home/pankaja/watchman'
  CC       thirdparty/libart/src/art.o
  AR       libart.a
ar: `u' modifier ignored since `D' is the default (see `U')
  CC       thirdparty/libtap_a-tap.o
  AR       libtap.a
ar: `u' modifier ignored since `D' is the default (see `U')
  CC       thirdparty/jansson/libwmanjson_a-dump.o
  CC       thirdparty/jansson/libwmanjson_a-error.o
  CC       thirdparty/jansson/libwmanjson_a-hashtable.o
  CC       thirdparty/jansson/libwmanjson_a-load.o
  CC       thirdparty/jansson/libwmanjson_a-memory.o
  CC       thirdparty/jansson/libwmanjson_a-pack_unpack.o
  CC       thirdparty/jansson/libwmanjson_a-strbuffer.o
  CC       thirdparty/jansson/libwmanjson_a-strconv.o
  CC       thirdparty/jansson/libwmanjson_a-utf.o
  CC       thirdparty/jansson/libwmanjson_a-value.o
  AR       libwmanjson.a
ar: `u' modifier ignored since `D' is the default (see `U')
  CC       watchman-argv.o
  CC       watchman-envp.o
  CC       watchman-spawn.o
  CC       watchman-opt.o
  CC       watchman-cfg.o
  CC       watchman-clockspec.o
  CC       watchman-checksock.o
  CC       watchman-fstype.o
  CC       watchman-log.o
  CC       watchman-ignore.o
  CC       watchman-json.o
  CC       watchman-bser.o
  CC       watchman-expflags.o
  CC       watchman-hash.o
hash.c: In function ‘w_hash_bytes’:
hash.c:228:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 12: c+=((uint32_t)k[11])<<24;
                ~^~~~~~~~~~~~~~~~~~~~~~~
hash.c:229:7: note: here
       case 11: c+=((uint32_t)k[10])<<16;
       ^~~~
hash.c:229:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 11: c+=((uint32_t)k[10])<<16;
                ~^~~~~~~~~~~~~~~~~~~~~~~
hash.c:230:7: note: here
       case 10: c+=((uint32_t)k[9])<<8;
       ^~~~
hash.c:230:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 10: c+=((uint32_t)k[9])<<8;
                ~^~~~~~~~~~~~~~~~~~~~~
hash.c:231:7: note: here
       case 9 : c+=k[8];
       ^~~~
hash.c:231:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 9 : c+=k[8];
                ~^~~~~~
hash.c:232:7: note: here
       case 8 : b+=((uint32_t)k[7])<<24;
       ^~~~
hash.c:232:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 8 : b+=((uint32_t)k[7])<<24;
                ~^~~~~~~~~~~~~~~~~~~~~~
hash.c:233:7: note: here
       case 7 : b+=((uint32_t)k[6])<<16;
       ^~~~
hash.c:233:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 7 : b+=((uint32_t)k[6])<<16;
                ~^~~~~~~~~~~~~~~~~~~~~~
hash.c:234:7: note: here
       case 6 : b+=((uint32_t)k[5])<<8;
       ^~~~
hash.c:234:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 6 : b+=((uint32_t)k[5])<<8;
                ~^~~~~~~~~~~~~~~~~~~~~
hash.c:235:7: note: here
       case 5 : b+=k[4];
       ^~~~
hash.c:235:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 5 : b+=k[4];
                ~^~~~~~
hash.c:236:7: note: here
       case 4 : a+=((uint32_t)k[3])<<24;
       ^~~~
hash.c:236:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 4 : a+=((uint32_t)k[3])<<24;
                ~^~~~~~~~~~~~~~~~~~~~~~
hash.c:237:7: note: here
       case 3 : a+=((uint32_t)k[2])<<16;
       ^~~~
hash.c:237:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 3 : a+=((uint32_t)k[2])<<16;
                ~^~~~~~~~~~~~~~~~~~~~~~
hash.c:238:7: note: here
       case 2 : a+=((uint32_t)k[1])<<8;
       ^~~~
hash.c:238:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 2 : a+=((uint32_t)k[1])<<8;
                ~^~~~~~~~~~~~~~~~~~~~~
hash.c:239:7: note: here
       case 1 : a+=k[0];
       ^~~~
cc1: all warnings being treated as errors
Makefile:2313: recipe for target 'watchman-hash.o' failed
make[1]: *** [watchman-hash.o] Error 1
make[1]: Leaving directory '/home/pankaja/watchman'
Makefile:868: recipe for target 'all' failed
make: *** [all] Error 2

What's wrong ? How can I fix this ?

I arrived here searching on the error @mnpenner had https://gist.github.com/markis/705f101a549f958d62546fb966caae42#gistcomment-2276955

What corrected that error for me on Ubuntu 16.04 was running ./configure again after installing libssl-dev

Try ./configure --enable-lenientinstead of./configure.

It worked perfectly for me.

FYI I also had to sudo apt-get install libcrypto++-dev to get around the following build errors on 18.04 using v4.9.0:

ContentHash.cpp:65: undefined reference to `SHA1_Init'
ContentHash.cpp:78: undefined reference to `SHA1_Update'
ContentHash.cpp:81: undefined reference to `SHA1_Final'

I am using Ubuntu 18.04,
getting error after make command.

error screen is

gd@gd10:/tmp/watchman$ make
make  all-am
make[1]: Entering directory '/tmp/watchman'
  CC       watchman-hash.o
hash.c: In function ‘w_hash_bytes’:
hash.c:228:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 12: c+=((uint32_t)k[11])<<24;
                ~^~~~~~~~~~~~~~~~~~~~~~~
hash.c:229:7: note: here
       case 11: c+=((uint32_t)k[10])<<16;
       ^~~~
hash.c:229:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 11: c+=((uint32_t)k[10])<<16;
                ~^~~~~~~~~~~~~~~~~~~~~~~
hash.c:230:7: note: here
       case 10: c+=((uint32_t)k[9])<<8;
       ^~~~
hash.c:230:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 10: c+=((uint32_t)k[9])<<8;
                ~^~~~~~~~~~~~~~~~~~~~~
hash.c:231:7: note: here
       case 9 : c+=k[8];
       ^~~~
hash.c:231:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 9 : c+=k[8];
                ~^~~~~~
hash.c:232:7: note: here
       case 8 : b+=((uint32_t)k[7])<<24;
       ^~~~
hash.c:232:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 8 : b+=((uint32_t)k[7])<<24;
                ~^~~~~~~~~~~~~~~~~~~~~~
hash.c:233:7: note: here
       case 7 : b+=((uint32_t)k[6])<<16;
       ^~~~
hash.c:233:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 7 : b+=((uint32_t)k[6])<<16;
                ~^~~~~~~~~~~~~~~~~~~~~~
hash.c:234:7: note: here
       case 6 : b+=((uint32_t)k[5])<<8;
       ^~~~
hash.c:234:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 6 : b+=((uint32_t)k[5])<<8;
                ~^~~~~~~~~~~~~~~~~~~~~
hash.c:235:7: note: here
       case 5 : b+=k[4];
       ^~~~
hash.c:235:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 5 : b+=k[4];
                ~^~~~~~
hash.c:236:7: note: here
       case 4 : a+=((uint32_t)k[3])<<24;
       ^~~~
hash.c:236:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 4 : a+=((uint32_t)k[3])<<24;
                ~^~~~~~~~~~~~~~~~~~~~~~
hash.c:237:7: note: here
       case 3 : a+=((uint32_t)k[2])<<16;
       ^~~~
hash.c:237:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 3 : a+=((uint32_t)k[2])<<16;
                ~^~~~~~~~~~~~~~~~~~~~~~
hash.c:238:7: note: here
       case 2 : a+=((uint32_t)k[1])<<8;
       ^~~~
hash.c:238:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
       case 2 : a+=((uint32_t)k[1])<<8;
                ~^~~~~~~~~~~~~~~~~~~~~
hash.c:239:7: note: here
       case 1 : a+=k[0];
       ^~~~
cc1: all warnings being treated as errors
Makefile:2313: recipe for target 'watchman-hash.o' failed
make[1]: *** [watchman-hash.o] Error 1
make[1]: Leaving directory '/tmp/watchman'
Makefile:868: recipe for target 'all' failed
make: *** [all] Error 2
gd@gd10:/tmp/watchman$```

I install with master branch, and worked perfectly for me.

Thanks for this man! 🥇

How do you test if watchman works?

How do I correct this error found after running the sudo apt-get install -y autoconf automake build-essential python-dev libtool libssl-dev command

The following packages have unmet dependencies:
python-dev : Depends: python (= 2.7.11-1) but 2.7.12-116.04 is to be installed
Depends: libpython-dev (= 2.7.11-1) but it is not going to be installed
Depends: python2.7-dev (>= 2.7.11-1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

These steps worked for me on Ubuntu 18.4 (note I had to install the pkg-config package):

sudo apt install -y autoconf automake build-essential python-dev libtool libssl-dev pkg-config
cd /tmp
git clone https://github.com/facebook/watchman.git
cd watchman/
git checkout v4.9.0
./autogen.sh 
./configure 
make
sudo make install

thank you

ditto on 18.04 pkg-config is also needed

./configure --enable-lenient

it worked for https://gist.github.com/markis/705f101a549f958d62546fb966caae42#gistcomment-2222957

These steps worked for me on Ubuntu 18.4 (note I had to install the pkg-config package):

sudo apt install -y autoconf automake build-essential python-dev libtool libssl-dev pkg-config
cd /tmp
git clone https://github.com/facebook/watchman.git
cd watchman/
git checkout v4.9.0
./autogen.sh 
./configure 
make
sudo make install

Working! thx!!

./configure --without-python --without-pcre --enable-lenient

did the trick on 19.04

I updated the script with all the comments mentioned here, ie. pkg-config and --enable-lenient

Another way more easiest is sudo apt install watchman